Est-il possible de lire un fichier .so dans Android ?

Question

Je suis nouveau sur Android et j'ai un projet qui contient une .so fichier. Dans un .java cette librairie est utilisée et je veux la lire. .so fichier.

Answer 1

Oui, vous pouvez le lire en utilisant ReadElf.java. https://Android.googlesource.com/platform/cts/+/17fcb6c/libs/deviceutil/src/Android/cts/util/ReadElf.java .

Le code ci-dessous lit le fichier .SO et détermine le type d'architecture.

Code complet- https://github.com/robust12/ArchFinderBLStack.git

public class MainActivity extends AppCompatActivity {

private final String TAG = "MainActivity";

private final String ARMV7ABI = "armeabi-v7a";
private final String X86 = "x86";
private final String MIPS = "mips";
private final String X86_64 = "x86_64";
private final String ARM64_V8 = "arm64-v8a";
private final String ARMABI = "armeabi";
private String result = "";

private File[] libFilesArray;
private int request_code = 1;
HashMap<Integer, String> typeMap;
private TextView textView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    textView = findViewById(R.id.textViewId);
    typeMap = new HashMap<>();
    initializeMap();
    readFilesFromStorage();
    textView.setText(result);
    textView.setMovementMethod(new ScrollingMovementMethod());
}
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
private void readFilesFromStorage() throws NullPointerException {
    String filePath = Environment.getExternalStorageDirectory() + "/test-input/";
    File readSOFILE = new File(filePath);
    if(!readSOFILE.exists()) {
        result = getString(R.string.path_not_exist);
        return;
    }
    libFilesArray = readSOFILE.listFiles();
    if(libFilesArray == null) {
        result = getString(R.string.error);
        return;
    }
    findAbiType();
}

private void findAbiType() {
    int count = libFilesArray.length;
    int soCount = 0;
    result = "";
    Log.e(TAG, "Count  is  " + count);
    for (int i = 0; i < count; i++) {
        try {
            if (libFilesArray[i].isFile()) {
                int type = ReadElf.read(libFilesArray[i]).getType();
                if (type == 3) {
                    soCount++;
                    int archCode = ReadElf.e_machine;
                    result += libFilesArray[i].getName() + " - " + typeMap.get(archCode) + "\n\n";
                    Log.e(TAG, "Code  is  " + archCode);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    if(soCount != 0) {
        result += "Total Libs Count: " + soCount + "\n\n";
    } else{
        result = getString(R.string.incorrect_type_libs);
    }
}

private void initializeMap() {
    typeMap.put(40, ARMV7ABI);
    typeMap.put(3, X86);
    typeMap.put(8, MIPS);
    typeMap.put(62, X86_64);
    typeMap.put(183, ARM64_V8);
    typeMap.put(164, ARMABI);
}

}